forked from Imagelibrary/binutils-gdb
699e91f4e1
This patch implements module support for the new linux-kernel target by
adding a target_so_ops. In addition this patch adds handling for kernel
virtual addresses. This is necessary because kernel modules, unlike
task_structs, live in kernel virtual address space. Thus addresses need
to be translated before they can be read from. We achieve this by adding
an implementation for the targets to_xfer_partial hook, which translates
the addresses before passing them down to the target beneath.
gdb/ChangeLog:
* lk-modules.h: New file.
* lk-modules.c: New file.
* lk-low.h (lk_hook_is_kvaddr, lk_hook_vtop)
(lk_hook_get_module_text_offset): New arch dependent hooks.
(sturct lk_private_hooks): Add new hooks.
(LK_MODULES_NAME_LEN, LK_UTS_NAME_LEN): New define.
* lk-low.c (lk-modules.h): New include.
(lk_kvtop, restore_current_target, lk_xfer_partial): New functions.
(lk_init_private_data): Declare needed debug symbols.
(lk_try_push_target): Assert for new hooks and set solib_ops.
(init_linux_kernel_ops): Add implementation for to_xfer_partial.
* solib.c (get_solib_search_path): New function.
* solib.h (get_solib_search_path): New export.
* Makefile.in (SFILES, ALLDEPFILES): Add lk-modules.c.
(HFILES_NO_SRCDIR): Add lk-modules.h.
(ALL_TARGET_OBS): Add lk-modules.o.
* configure.tgt (lk_target_obs): Add lk-modules.o.
111 lines
3.6 KiB
C
111 lines
3.6 KiB
C
/* Shared library declarations for GDB, the GNU Debugger.
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Copyright (C) 1992-2017 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef SOLIB_H
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#define SOLIB_H
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/* Forward decl's for prototypes */
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struct so_list;
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struct target_ops;
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struct target_so_ops;
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struct program_space;
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#include "symfile-add-flags.h"
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/* Returns the solib_search_path. The returned string is malloc'ed and must be
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freed by the caller. */
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extern const char *get_solib_search_path ();
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/* Called when we free all symtabs, to free the shared library information
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as well. */
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extern void clear_solib (void);
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/* Called to add symbols from a shared library to gdb's symbol table. */
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extern void solib_add (const char *, int, struct target_ops *, int);
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extern int solib_read_symbols (struct so_list *, symfile_add_flags);
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/* Function to be called when the inferior starts up, to discover the
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names of shared libraries that are dynamically linked, the base
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addresses to which they are linked, and sufficient information to
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read in their symbols at a later time. */
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extern void solib_create_inferior_hook (int from_tty);
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/* If ADDR lies in a shared library, return its name. */
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extern char *solib_name_from_address (struct program_space *, CORE_ADDR);
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/* Return 1 if ADDR lies within SOLIB. */
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extern int solib_contains_address_p (const struct so_list *, CORE_ADDR);
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/* Return whether the data starting at VADDR, size SIZE, must be kept
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in a core file for shared libraries loaded before "gcore" is used
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to be handled correctly when the core file is loaded. This only
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applies when the section would otherwise not be kept in the core
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file (in particular, for readonly sections). */
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extern int solib_keep_data_in_core (CORE_ADDR vaddr, unsigned long size);
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/* Return 1 if PC lies in the dynamic symbol resolution code of the
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run time loader. */
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extern int in_solib_dynsym_resolve_code (CORE_ADDR);
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/* Discard symbols that were auto-loaded from shared libraries. */
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extern void no_shared_libraries (char *ignored, int from_tty);
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/* Set the solib operations for GDBARCH to NEW_OPS. */
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extern void set_solib_ops (struct gdbarch *gdbarch,
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const struct target_so_ops *new_ops);
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/* Return non-zero if NAME is the libpthread shared library. */
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extern int libpthread_name_p (const char *name);
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/* Look up symbol from both symbol table and dynamic string table. */
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extern CORE_ADDR gdb_bfd_lookup_symbol (bfd *abfd,
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int (*match_sym) (const asymbol *,
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const void *),
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const void *data);
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/* Look up symbol from symbol table. */
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extern CORE_ADDR gdb_bfd_lookup_symbol_from_symtab (bfd *abfd,
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int (*match_sym)
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(const asymbol *,
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const void *),
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const void *data);
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/* Enable or disable optional solib event breakpoints as appropriate. */
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extern void update_solib_breakpoints (void);
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/* Handle an solib event by calling solib_add. */
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extern void handle_solib_event (void);
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#endif /* SOLIB_H */
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